187706 Wall Thimble, Type B Gas Vent, 6-In.

The Selkirk 187706 Wall Thimble is a Type B gas vent fitting designed for use with Selkirk 6-inch RV Type B gas vent pipe systems. This wall thimble serves as a critical interface between your gas venting appliance and the wall or roof penetration, ensuring safe and code-compliant installation of gas-fired water heaters, furnaces, stoves, and other venting applications.

Built with double-wall construction featuring an inner aluminum liner and outer galvanized steel shell, this thimble maintains permanent insulation with a built-in air space that keeps the inner pipe hot while keeping the outer surface relatively cool. This dual-material construction also functions as a firestop, ensuring proper clearance to combustibles is maintained and meeting fire safety requirements.

Features and Benefits

• Double-Wall Insulated Design: The built-in air space between the aluminum inner liner and galvanized steel outer shell provides permanent insulation, reducing heat transfer to surrounding materials.
• Firestop Protection: Maintains clearance to combustibles and functions as a firestop to enhance fire safety and meet code requirements.
• LockTab System: Includes an alternative method to secure pipe when required by local building codes.
• Aluminum and Galvanized Steel Materials: Inner liner is aluminum with galvanized steel outer construction for durability.

Specifications

• Brand: Selkirk
• Model: 187706
• Type: Type B Gas Vent Wall Thimble
• Size: 6-inch (Inner Diameter 6-5/8 inches, Outer Diameter 10-3/4 inches)
• Material: Aluminum inner liner with galvanized steel outer shell
• Application: Selkirk 6-inch RV Type B Gas Vent Pipe systems